Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd46ac297dd0e08…

MALICIOUS

PDF

48.3 KB Created: 2021-06-14 01:45:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 00991b90d0fb54aaedd3dd5716af441a SHA-1: 236d7eda1edc63953d141b249d16dadd415d1a0c SHA-256: edd46ac297dd0e080d008288b147e950a6851d627c12466fe453b4287cf20791
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users to external websites, many of which are associated with malicious redirectors or SEO link farms. The document body and heuristics indicate a focus on game hacks and generators, suggesting a phishing or scam attempt. While no scripts were directly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to lead users to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/roblox-dashing-simulator-hack-script-pastebin-2021-game-hack In PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/bloxawards-com-earn-free-robux-by-doing-simple-tasks_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/ajc-rome-tech-free-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-2-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFF 27060 bytes
SHA-256: 4a1db1ea1b4a00fb8dc4aa1299e5289d29b9188092d2e98b9f22f6ddc56c4a68
font_01_sfnt_off00008832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8832 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000094da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94DA 20160 bytes
SHA-256: b7fbbcd4e73326c116425a6d8b03039854293019137a83c7e0b6afe78ca874d6

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